Rotor for dynamos and electromotors.



No. 894,144. PATENTED JULY 21, 1908;

J. HISSINK. ROTOR FOR DYNAMOS AND ELECTROMOTORS.

APPLIGATION FILED MAY 17, 1906.

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iYUfi A Q E y 2 p FY6925? I I Juvenfor: M J z q [4664 W iii/1120 No.894,144. PATENTED JULY 21, 190 8. J. HISSINK. I

ROTOR FOR DYNAMOS AND ELEGTROMOTORS. APPLIGATIONIILED MAY 17, 1906.

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FigAT iQmh-hK JACK HISSINK, OF BERLIN, GERMANY.

- ROTOR FOR DYNAMOS AND ELECTROMOTORS.

Specification of Letters Patent.

Patented July 21, 1908 Applicationfiled May 1'7, 1906. Serial No.317,325.

To all whom it may concern:

Be it known" that I, JACK HIssINK, a subject of the Queen of Holland,and residing at No. 8 Hansa-Ufer, Berlin, Germany, have invented new anduseful Improvements in Rotors for Dynamos and Electromotors, of whichthe following is a full, clear, and exact description.

This invention relates to improvements in rotors for dynamos andelectro-motors driven at high speed, and more particularly forsinglephase and poly hase'purrent generators having revolving flfeldmagnets. For this purpose of the present invention the projectingportions of the rotor coils are separated from each other by means offlat disks which project radially beyond the said coils. A coil ofbonding wire is wound. over the conductors in the channels between therojecting rims of the said disks, the said 001 being, therefore,likewise sub-divided and held in position so that it cannot slip fromthe conductors. A rigid'external support adapted to take up thecentrifugal forces is thus dispensed with.

' If the co per is uniformly distributed on the rotor t e numbers ofcoils placed between adjacent disks are uniform, but if the distributionof the copper on the rotor is not uniform, the conductors between thedisks are so grouped that the spaces between the latter are ap'roximately uniform. Devices involving suc distribution of the-copper'arecovered in another a plication bearing the same date and Serial l umber317326, and do not form the object of the present application,

The inventionis illustrated in the annexed drawing by means of anexample, Figure 1 being a cross-section of the rotor-core, Fig. 2 alongitudinal section of the core and three rotor coils, and Fig. 3 adiagrammatic plan view of the projecting portions of the said coils.Fig. 4 shows a modification of the device in cross section.

As shown in Fig; 1, the rotor-slots are of uniform depth but not ofuniform cross-section, the dimensions thereof being such that thedistribution of the ampere-turns on the rotor follows a sine variation,and that the greatest amount of iron is provided at those parts whichare traversed by the greatest number of lines of force, namely betweenthe narrow slots, the distribution of the iron being that which is shownby calculation to be most efficient. The field coils a b and c areinserted into the rotor slots in the usual manner. At each end oftherotor-core two rings (land a of L-section are fixed side by side to therotor shaft, the vertical flange of the ring (1 being provided with aslot for the reception of each group of conductors projectlng from theend 0' the rotor. Certain groups of conductors also extend through slotswith which the vertical flange of the ring 6 is provided, the conductorsbeing bent around the respective rings so that they are seated on thehorizontal flanges of the latter.

An annular end plate f is fixed to the ring e to afford lateral supportto the conductors placed on the'said ring. In the example illustratedthe distribution of the copper on the rotor is not uniform, andconsequently the conductors at either end of the rotor do not rojectuniformly from the latter. The con uctors outside the rotor are,therefore, so grou ed that the amount of space required there or ateither side of the vertical flange of the ring 6 is approximatelyuniform. For this purpose the external parts of the coils a and bareplaced together on the ring d and thus se arated from the externalportion of the coil 0 placed on the ring 6.

Over the conductors on the ring (Z and e,

and between the projecting rims of the saidrings and the plate j coilsof wire g and h are wound to form bonds, so that the whole bandage g hfor the field coils (2-?) c is divided into two parts by the verticalflange of the ring e, so that lateral displacement thereof is prevented.

It Is obvious that instead of using rings of angular cross-section, witha horizontal flange for seating the conductors, the groups ofoonductorscan be directly seated on the rotor shaft and separated fromeach other by flat slotted rings as at 'i and 7c in Fig. 4.

I claim as my invention 1. In a rotor for a dynamo or electromotor thecombination of a rotor core, groups of rotor-conductors, projecting fromthe ends of the rotor core, separating rings, radiallyprojecting beyondsaid conductors and bonding wires, being wound on the said conductorsbetween the projecting rims of the said rings.

2. In a rotor for a dynamo or electromotor the combination of arotorcore, groups of rotor conductors, projecting from the ends ofthe-rotor core, separating rings, radially projecting beyond saidconductors, and bonding wires, being wound on the said conductorsbetween the projecting rims of the said rings,

llnnges, mounted on the said rings, on which flanges the said oonduetorsare seated.

3. In a rotor for a dynamo or eleetlomotor, the combination of a rotoreore, having slots of uniform depth but of varying cross-seetional area,a seriesol field coils in the said slots, such field eoils projectingfrom the ends ol the rotor core, separating disks, radially projectingbeyond said field-coils, bonding 11) wires, being wound on the saidfield-coils between the projeeting rims ol the said rings,

flanges, mounted on the said rings, on whieh flanges the said(conductors are sealed, :1 plate, fixed to the foremost ol' the ringsfor supporting the field eoils, subslznitiully as de- 1-; scribed andshown in the drawing".

In testimony whereol I :LlllX my signature in the presence of twowitnesses.

JACK HISSlNK. Witnesses W OLDEMAR HAUPT, HENRY lllxsricu.

